This model is a colossal waste of money. The parts don't all print correctly. From what I can tell, you can't modify the quality settings, and the default quality makes the parts so brittle that many of them broke during attempted assembly. At least one part makes the printer stop performing immediately after the job is started. Another won't print properly at all. So $15 for the model, over 500k of filament, multiple days of printing, a significant amount of frustration, ended in a bunch of PLA in the garbage. This is not due to my inexperience....I've printed a significant amount and can diagnose and fix most problems on my own. This is just a bad model. So masochists everywhere, this is for you. For everyone else, save your money and PLA.